CN219950843U - Optical fiber perform refractive index automatic control system - Google Patents
Optical fiber perform refractive index automatic control system Download PDFInfo
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- CN219950843U CN219950843U CN202321398060.4U CN202321398060U CN219950843U CN 219950843 U CN219950843 U CN 219950843U CN 202321398060 U CN202321398060 U CN 202321398060U CN 219950843 U CN219950843 U CN 219950843U
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 23
- IEXRMSFAVATTJX-UHFFFAOYSA-N tetrachlorogermane Chemical compound Cl[Ge](Cl)(Cl)Cl IEXRMSFAVATTJX-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000004891 communication Methods 0.000 claims abstract description 53
- 238000003860 storage Methods 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 230000008021 deposition Effects 0.000 claims description 27
- 238000001448 refractive index detection Methods 0.000 claims description 23
- 238000012937 correction Methods 0.000 claims description 14
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 27
- 238000005137 deposition process Methods 0.000 abstract description 4
- 238000007380 fibre production Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 13
- 230000001105 regulatory effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
The utility model provides an automatic control system for refractive index of an optical fiber preform, which relates to the technical field of optical fiber production, and comprises a PLC (programmable logic controller) control system and a gas flow controller, wherein the PLC control system and the gas flow controller are in communication control connection, the PLC control system is connected with a product traceability management system, and the PLC control system and the product traceability management system are in communication feedback connection; the product traceability management system is provided with a detection result input module and a detection result storage module which are in communication connection; the PLC control system is provided with a target value module, a comparison result storage module, a refractive index judgment module and a flow adjustment feedback module which are sequentially in communication feedback connection, the detection result storage module is in communication feedback connection with the comparison module, and the flow adjustment feedback module is in communication control connection with the gas flow controller. The utility model can automatically adjust the flow of germanium tetrachloride in the core rod deposition process, reduce the labor intensity and improve the production efficiency.
Description
Technical Field
The utility model relates to the technical field of optical fiber production, in particular to an optical fiber preform refractive index automatic control system.
Background
The core rod of the optical fiber preform comprises a core layer and a cladding layer, and in order to meet the requirement of optical fiber total reflection transmission signals, a small amount of germanium tetrachloride is doped in the core layer in the deposition production process to adjust the refractive index of the optical fiber. At present, germanium tetrachloride is supplied by heating germanium tetrachloride to make the germanium tetrachloride boil into steam, and then the germanium tetrachloride gas is sent to a deposition furnace to participate in chemical reaction. The germanium tetrachloride gas input flow rate is controlled by a (gas flow controller), and the refractive index of the optical performance is not always unchanged along with the change of the deposition condition and the environment, so that the flow rate of the germanium tetrachloride is required to be adjusted frequently to adjust the refractive index. The flow of germanium tetrachloride is timely and accurately regulated, and the method plays an important role in stabilizing the optical performance of the core rod and improving the quality of the optical fiber preform.
The adjusting flow of the optical refractive index of the core rod in the traditional mode is as follows: the loose body is produced by deposition, dehydrated and sintered to become a glass body, then stretched to become a slender glass rod (core rod), the glass rod is placed on optical detection equipment to measure the optical refractive index and core-in ratio, and finally an engineer compares the measured result with a target value and adjusts the optical performance of the next deposited product.
In the adjustment flow, the comparison of the actual measurement result and the target value needs to be completed by an engineer, and it takes 35 to 40 hours from the beginning of product deposition to the completion of product detection, if the detection result comes out of the engineering off duty, or the engineering needs to be compared with overtime, thus leading to the engineer needing overtime at any time, being more inconvenient and having great labor intensity; or the comparison result and the flow adjustment can be carried out after waiting for the working of engineers, thus seriously affecting the production efficiency and increasing the production cost.
Disclosure of Invention
The utility model aims to provide an optical fiber preform refractive index automatic control system which can timely, accurately and automatically adjust the flow of germanium tetrachloride in the core rod deposition process, reduce the dependence on engineers, reduce the labor intensity of workers, improve the production efficiency, and improve the optical performance of the core rod and the quality of the preform.
The technical aim of the utility model is realized by the following technical scheme:
the automatic control system for the refractive index of the optical fiber preform comprises a PLC control system and a gas flow controller, wherein the PLC control system and the gas flow controller correspond to VAD deposition equipment, the PLC control system is in communication control connection with the gas flow controller, the PLC control system is connected with a product traceability management system, and the PLC control system and the product traceability management system are in communication feedback connection;
the product traceability management system is provided with a detection result input module and a detection result storage module which are in communication connection, and refractive index detection values are input through the detection result input module and are fed back and stored in the detection result storage module;
the PLC control system is provided with a target value module, a comparison result storage module, a refractive index judgment module and a flow adjustment feedback module which are sequentially in communication feedback connection, the detection result storage module is in communication feedback connection with the comparison module, the flow adjustment feedback module is in communication control connection with the gas flow controller, and refractive index judgment and flow adjustment rules are arranged in the refractive index judgment module;
the comparison module compares the refractive index detection value input by the detection result storage module with the refractive index target value set by the target value module, and feeds back a comparison result to the comparison result storage module; the comparison result storage module feeds back the comparison result to the refractive index judgment module, the refractive index judgment module judges the received comparison result according to the refractive index judgment and flow adjustment rules, judges whether germanium tetrachloride flow adjustment is needed, and sends a flow adjustment instruction to the flow adjustment feedback module; the flow adjustment feedback module controls the gas flow controller to adjust the germanium tetrachloride flow of the VAD deposition equipment according to the flow adjustment instruction.
By adopting the technical scheme, after the detection of the optical parameters of the core rod is completed, a detection personnel inputs the refractive index detection value through the detection result input module and feeds back the refractive index detection value to the detection result storage module. According to the specific type of the produced core rod, a refractive index target value is input into a target value module in advance, after a detection result storage module receives a refractive index detection result, the refractive index detection result is fed back to a comparison module, meanwhile, the target value module feeds back the refractive index target value to the comparison module, the comparison module compares the received refractive index detection value with the refractive index target value, feeds back the comparison result to the comparison result storage module, and feeds back the comparison result to a refractive index judgment module. The refractive index judging module judges the received comparison result according to the set refractive index judging and flow adjusting rules, judges whether germanium tetrachloride flow adjustment is needed, and sends a flow adjusting instruction to the flow adjusting feedback module. The flow adjustment feedback module controls the gas flow controller to adjust the germanium tetrachloride flow rate of the VAD deposition equipment according to the flow adjustment instruction, and the new flow germanium tetrachloride can be conveyed to a blowtorch of the VAD deposition equipment to participate in chemical reaction.
According to the utility model, by utilizing the PLC control system and the product traceability management system which are in communication linkage, whether the germanium tetrachloride flow rate needs to be regulated or not is automatically judged according to the input refractive index detection result, and the gas flow controller is automatically controlled to execute the related flow regulation instruction, so that the germanium tetrachloride flow rate is timely, accurately and automatically regulated in the core rod deposition process, no engineer needs to wait for manual judgment at any time, the dependence on engineers is reduced, the labor intensity of manpower is reduced, the continuous production of core rod deposition is ensured, the production efficiency is improved, and the optical performance of the core rod and the quality of a prefabricated rod are improved. The PLC system is in communication feedback connection with the product tracing management system, and the working process of automatically judging whether the germanium tetrachloride flow needs to be regulated is fed back to the product tracing management system, so that tracing is fast and accurate in the later period, and the production transparency is improved.
When the method is applied to core rod deposition production, the average refractive index adjustment time is reduced by about 5 hours, the risk that the refractive index exceeds a design target in the next core rod deposition is reduced, and the optical performance stability of the optical fiber is improved by about 20%.
Further, the refractive index determination and flow adjustment rule is as follows: when the comparison result is within the range of the target value + -0.01, the flow of germanium tetrachloride does not need to be regulated; when the comparison result is higher than the target value 0.02, the flow of germanium tetrachloride is reduced by 4sccm; when the comparison result is lower than the target value of 0.02, the flow of germanium tetrachloride is increased by 4sccm; when the comparison result is higher than the target value of 0.01, the flow of germanium tetrachloride is reduced by 2sccm; when the comparison result is lower than the target value of 0.01, the flow rate of germanium tetrachloride is increased by 2sccm; when the comparison result of three continuous times is larger than the target value 0.01, the flow of germanium tetrachloride is reduced by 3sccm; when the comparison result of three continuous times is smaller than the target value of 0.01, the flow of germanium tetrachloride is increased by 3sccm; when the continuous rising trend is shown between the continuous three comparison results, the flow of germanium tetrachloride is reduced by 1sccm; and when the continuous descending trend is shown between the comparison results of three times, the flow of germanium tetrachloride is increased by 1sccm.
By adopting the technical scheme, after the refractive index judging module receives the comparison result fed back by the comparison result storage module, according to the refractive index judging and flow adjusting rules, whether the flow of germanium tetrachloride needs to be adjusted is automatically judged, a specific instruction of how much the flow of germanium tetrachloride is increased or decreased is accurately given, and the flow adjusting instruction is sent to the flow adjusting feedback module. The refractive index judgment and flow adjustment rules are summarized by repeated adjustment of engineers through years of working experience, are written into a PLC system after being digitalized and logically processed, and can meet the production needs of enterprises through half-year test operation tests.
Further, the refractive index judging module is also in communication connection with an alarm module, and the alarm module is in communication feedback connection with a product traceability management system; and when the comparison result received by the refractive index judging module is not in the refractive index judging and flow adjusting rule, the alarm module gives an alarm.
Through adopting above-mentioned technical scheme, when the contrast result that the refractive index judgement module received is not in refractive index judgement and flow adjustment rule, it is too big to indicate germanium tetrachloride flow difference, and alarm module sends out the police dispatch newspaper and feeds back to the product and trace back management system, reminds the staff to inspect VAD deposition equipment, artificially judges germanium tetrachloride flow regulation degree, avoids the germanium tetrachloride flow that leads to because of the equipment problem too big or undersize, guarantees the normal production and the production quality of plug.
Further, the product traceability management system is also provided with a flow adjustment storage module, and the flow adjustment feedback module is in communication feedback connection with the flow adjustment storage module.
By adopting the technical scheme, the flow adjustment feedback module feeds back the received flow adjustment instruction and stores the flow adjustment instruction into the flow adjustment storage module, so that the follow-up quick tracing is facilitated, and meanwhile, the product tracing management system is facilitated to carry out the operation of sending mails to engineers in the next step.
Further, the product traceability management system is also provided with a mail sending module, the flow adjustment storage module is in communication feedback connection with the mail sending module, the mail sending module is connected with a terminal, and the mail sending module sends the feedback result of the flow adjustment storage module to the terminal.
By adopting the technical scheme, the mail sending module sends the flow adjustment instruction received by the flow adjustment storage module to the terminal of the engineer, so that the engineer can conveniently confirm whether the flow adjustment instruction is correct or not, and the accuracy of germanium tetrachloride flow adjustment is ensured. Therefore, engineers can know the refractive index detection result and the germanium tetrachloride flow adjustment condition without going to the site, the labor intensity is effectively reduced, the continuity of the production of the core rod is ensured, and the production efficiency is improved.
Further, the PLC control system is also provided with an instruction correction module, the terminal is in communication control connection with the instruction correction module, and the instruction correction module is in communication feedback connection with the flow adjustment feedback module.
Through adopting above-mentioned technical scheme, when the engineer from the terminal discovery flow adjustment instruction has the error, can the remote utilization terminal pass through instruction correction module and send the exact flow adjustment instruction to flow adjustment feedback module, guarantee that flow adjustment feedback module can control gas flow controller and accurately adjust the flow of germanium tetrachloride, guarantee the stability of plug production.
Further, the alarm module is in communication feedback connection with the terminal, an alarm mode between the alarm module and the product tracing management system is sound-light alarm, and an alarm mode between the alarm module and the terminal is one or more of mail, telephone or short message.
By adopting the technical scheme, when the comparison result received by the refractive index judging module is not in the refractive index judging and flow adjusting rule, the alarm module also sends alarm information to the terminal so as to remind an engineer of timely processing abnormal conditions. The alarm mode between the alarm module and the product traceability management system is audible and visual alarm, so that workers can be conveniently and intuitively reminded of timely processing. The alarm mode between the alarm module and the terminal is one or more of mail, telephone or short message, and the alarm mode which is relatively soft but can prompt the engineer in time is adopted so as to ensure the timeliness of the engineer to deal with abnormal problems.
Further, the product traceability management system and the PLC control system are also in communication feedback connection with a database, the database is in communication feedback connection with the terminal, and an encryption module is arranged between the database and the terminal.
By adopting the technical scheme, the product traceability management system and the PLC control system feed corresponding operations back to the database, so that the production traceability can be realized later. The database is in communication feedback connection with the terminal, and an encryption module is arranged between the database and the terminal, so that an engineer can know production information remotely by using the terminal at any time, and confidentiality and safety of production data are guaranteed.
In summary, the utility model has the following beneficial effects:
1. according to the utility model, a communication linkage PLC control system and a product traceability management system are utilized, and according to an input refractive index detection result, a refractive index judging module timely and accurately judges whether the germanium tetrachloride flow needs to be regulated and the specific value of flow regulation or not by utilizing a refractive index judging and flow regulating rule, and an automatic control gas flow controller executes a relevant flow regulating instruction, so that the germanium tetrachloride flow is timely and accurately automatically regulated in the core rod deposition process, no engineer needs to stand by for human judgment at any time, dependence on engineers is reduced, the labor intensity of workers is reduced, meanwhile, the continuous production of core rod deposition is ensured, the production efficiency is improved, and the optical performance of the core rod and the quality of a prefabricated rod are improved;
2. when the method is applied to core rod deposition production, the average adjustment time of the refractive index is reduced by about 5 hours, the risk that the refractive index exceeds a design target in the next core rod deposition is reduced, and the optical performance stability of the optical fiber is improved by about 20 percent;
3. when the utility model is used, the mail sending module can be utilized to send the flow adjustment instruction to the terminal, so that an engineer can conveniently and remotely confirm whether the flow adjustment instruction is correct or not, and the accuracy of germanium tetrachloride flow adjustment is ensured;
4. when an engineer discovers that the flow adjustment instruction has errors from the terminal, the terminal can be remotely utilized to send a correct flow adjustment instruction to the flow adjustment feedback module through the instruction correction module, so that the flow adjustment feedback module can control the gas flow controller to accurately adjust the flow of germanium tetrachloride, and the production stability of the core rod is ensured.
Drawings
Fig. 1 is a schematic view of a refractive index automatic control system for an optical fiber preform.
In the figure, 1, a PLC control system; 11. a target value module; 12. a comparison module; 13. a comparison result storage module; 14. a refractive index determination module; 141. refractive index judgment and flow adjustment rules; 15. a flow adjustment feedback module; 16. an alarm module; 17. an instruction correction module; 2. a gas flow controller; 3. a product traceability management system; 31. a detection result input module; 32. the detection result storage module; 33. a flow adjustment storage module; 34. a mail sending module; 4. a terminal; 5. a database; 51. an encryption module; 6. VAD deposition apparatus.
Detailed Description
The utility model will be described in further detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
An automatic refractive index control system of an optical fiber preform, as shown in fig. 1, comprises a PLC control system 1 and a gas flow controller 2 corresponding to VAD deposition equipment 6, wherein the PLC control system 1 is in communication control connection with the gas flow controller 2, and the PLC control system 1 controls and adjusts the gas flow of a burner on the VAD deposition equipment 6 through the gas flow controller 2. The PLC control system 1 is connected with the product traceability management system 3, the PLC control system 1 and the product traceability management system 3 are in communication feedback connection, the product traceability management system 3 can transmit input data to the PLC control system 1 for processing, and the PLC control system 1 can also feed back a data processing process and a processing result to the product traceability management system 3 for re-storage so as to carry out quick and accurate traceability on production conditions. The product tracing management system 3 and the PLC control system 1 are also in communication feedback connection with a database 5, and the product tracing management system 3 and the PLC control system 1 feed corresponding operations back to the database 5 for storage.
As shown in fig. 1, the product traceability management system 3 is provided with a detection result input module 31 and a detection result storage module 32 which are in communication connection, and after the core rod optical parameter detection is completed, a detection person inputs and feeds back a refractive index detection value to the detection result storage module 32 through the detection result input module 31. The PLC control system 1 is provided with a target value module 11, a comparison module 12, a comparison result storage module 13, a refractive index determination module 14 and a flow adjustment feedback module 15 which are sequentially in communication feedback connection, the detection result storage module 32 is in communication feedback connection with the comparison module 12, the flow adjustment feedback module 15 is in communication control connection with the gas flow controller 2, and the refractive index determination module 14 is internally provided with a refractive index determination and flow adjustment rule 141.
As shown in fig. 1, a refractive index target value is input into a target value module 11 in advance according to the specific type of the produced mandrel, after a refractive index detection result is received by a detection result storage module 32, the refractive index detection result is fed back to a comparison module 12, meanwhile, the target value module 11 feeds back the refractive index target value to the comparison module 12, the comparison module 12 compares the received refractive index detection value and the refractive index target value, feeds back the comparison result to a comparison result storage module 13, and then feeds back to a refractive index judgment module 14. The refractive index determination module 14 determines the received comparison result according to the set refractive index determination and flow adjustment rule 141, determines whether to perform germanium tetrachloride flow adjustment, precisely gives a specific instruction of how much to increase or decrease the germanium tetrachloride flow, and then sends the flow adjustment instruction to the flow adjustment feedback module 15. The flow adjustment feedback module 15 controls the gas flow controller 2 to adjust the germanium tetrachloride flow rate of the VAD deposition equipment 6 according to the flow adjustment instruction, and the new flow germanium tetrachloride can be conveyed to the blowtorch of the VAD deposition equipment 6 to participate in chemical reaction.
In this embodiment, the refractive index determination and flow adjustment rule 141 is summarized by repeated adjustment of the engineer through years of working experience, is written into the PLC system after being digitized and logically, and is tested for half a year to form the refractive index determination and flow adjustment rule 141 capable of meeting the production needs of enterprises. The method comprises the following steps: when the comparison result is within the range of the target value + -0.01, the flow of germanium tetrachloride does not need to be regulated; when the comparison result is higher than the target value 0.02, the flow of germanium tetrachloride is reduced by 4sccm; when the comparison result is lower than the target value of 0.02, the flow of germanium tetrachloride is increased by 4sccm; when the comparison result is higher than the target value of 0.01, the flow of germanium tetrachloride is reduced by 2sccm; when the comparison result is lower than the target value of 0.01, the flow rate of germanium tetrachloride is increased by 2sccm; when the comparison result of three continuous times is larger than the target value 0.01, the flow of germanium tetrachloride is reduced by 3sccm; when the comparison result of three continuous times is smaller than the target value of 0.01, the flow of germanium tetrachloride is increased by 3sccm; when the continuous rising trend is shown between the continuous three comparison results, the flow of germanium tetrachloride is reduced by 1sccm; and when the continuous descending trend is shown between the comparison results of three times, the flow of germanium tetrachloride is increased by 1sccm.
As shown in fig. 1, in this embodiment, the PLC control system 1 is further provided with an alarm module 16 communicatively connected to the refractive index determination module 14, and the alarm module 16 is communicatively and feedback connected to the product traceability management system 3. When the comparison result received by the refractive index judging module 14 is not in the refractive index judging and flow adjusting rule 141, the fact that the germanium tetrachloride flow difference is too large is indicated, the alarm module 16 gives an alarm and feeds the alarm back to the product traceability management system 3, a worker is reminded to check the VAD deposition equipment 6, the germanium tetrachloride flow adjustment degree is judged manually, the situation that the germanium tetrachloride flow caused by equipment problems is too large or too small is avoided, and the normal production and production quality of the core rod are guaranteed. The alarm mode between the alarm module 16 and the product tracing management system 3 is sound-light alarm, so that the staff can be reminded of timely treatment quickly and intuitively.
As shown in fig. 1, the product traceability management system 3 is further provided with a flow adjustment storage module 33, and the flow adjustment feedback module 15 is in communication feedback connection with the flow adjustment storage module 33. The flow adjustment feedback module 15 feeds back and stores the received flow adjustment instruction into the flow adjustment storage module 33, so that the subsequent quick tracing and tracing are facilitated, and meanwhile, the product tracing management system is facilitated to perform the operation of sending the mail to the engineer in the next step.
As shown in fig. 1, the product traceability management system 3 is further provided with a mail sending module 34, the flow adjustment storage module 33 is in communication feedback connection with the mail sending module 34, the mail sending module 34 is connected with the terminal 4, and the mail sending module 34 sends the result fed back by the flow adjustment storage module 33 to the terminal 4. The PLC control system 1 is also provided with an instruction correction module 17, the terminal 4 is in communication control connection with the instruction correction module 17, and the instruction correction module 17 is in communication feedback connection with the flow adjustment feedback module 15. The terminal 4 may be a mobile phone, a computer, etc.
As shown in fig. 1, the mail sending module 34 sends the flow adjustment instruction received by the flow adjustment storage module 33 to the terminal 4 of the engineer, so that the engineer can confirm whether the flow adjustment instruction is correct, so as to ensure accuracy of germanium tetrachloride flow adjustment, and the engineer can know the refractive index detection result and germanium tetrachloride flow adjustment condition without going to the site. When an engineer discovers that the flow adjustment instruction has errors from the terminal 4, the terminal 4 can be remotely utilized to send a correct flow adjustment instruction to the flow adjustment feedback module 15 through the instruction correction module 17, so that the flow adjustment feedback module 15 can control the gas flow controller 2 to accurately adjust the flow of germanium tetrachloride, and the stability of the production of the core rod is ensured.
As shown in fig. 1, the alarm module 16 is also in communication feedback connection with the terminal 4, and the alarm mode between the alarm module 16 and the terminal 4 is one or more of mail, telephone or short message. Thus, when the comparison result received by the refractive index determination module 14 is not within the refractive index determination and flow adjustment rule 141, the alarm module 16 also sends alarm information to the terminal 4 so as to remind an engineer of timely handling the abnormal situation. The alarm mode between the alarm module 16 and the terminal 4 is one or more of mail, telephone or short message, and the alarm mode which is relatively soft but can prompt the engineer in time is adopted so as to ensure the timeliness of the engineer to deal with abnormal problems.
As shown in fig. 1, the database 5 is also in communication feedback connection with the terminal 4, and an encryption module 51 is arranged between the database and the terminal, so that confidentiality and security of production data are ensured while an engineer can remotely know production information by using the terminal 4 at any time. The encryption mode of the encryption module 51 may be one or more of a password, a fingerprint, a face recognition, an iris, etc. to ensure the security of encryption.
The computer program technology of each module in this embodiment is based on a mature computer technology in the prior art, and will not be described in detail.
The working principle and the using method of the utility model are as follows:
the refractive index target value is input into the target value module 11 in advance according to the specific type of the produced core rod, and after the core rod detection is completed, the detection personnel inputs the refractive index detection value through the detection result input module 31 and feeds back and stores the refractive index detection value into the detection result storage module 32. After receiving the refractive index detection result, the detection result storage module 32 feeds back the refractive index detection result to the comparison module 12, meanwhile, the target value module 11 feeds back the refractive index target value to the comparison module 12, the comparison module 12 compares the received refractive index detection value with the refractive index target value, feeds back the comparison result to the comparison result storage module 13, and feeds back the comparison result to the refractive index judgment module 14. The refractive index determination module 14 determines the received comparison result according to the set refractive index determination and flow adjustment rule 141, determines whether to perform germanium tetrachloride flow adjustment, precisely gives a specific instruction of how much to increase or decrease the germanium tetrachloride flow, and then sends the flow adjustment instruction to the flow adjustment feedback module 15. The flow adjustment feedback module 15 controls the gas flow controller 2 to adjust the germanium tetrachloride flow rate of the VAD deposition equipment 6 according to the flow adjustment instruction, and the new flow germanium tetrachloride can be conveyed to the blowtorch of the VAD deposition equipment 6 to participate in chemical reaction.
After the adjustment, the flow adjustment feedback module 15 feeds back the received flow adjustment instruction and stores the flow adjustment instruction in the flow adjustment storage module 33, and the mail sending module 34 sends the flow adjustment instruction received by the flow adjustment storage module 33 to the terminal 4 of the engineer, so that the engineer can conveniently confirm whether the flow adjustment instruction is correct. If the engineer finds that the flow adjustment command is error from the terminal 4, the correct flow adjustment command may be transmitted to the flow adjustment feedback module 15 by the command correction module 17 by the remote terminal 4.
When the comparison result received by the refractive index judging module 14 is not within the refractive index judging and flow adjusting rule 141, the alarm module 16 gives an alarm and feeds back to the product tracing management system 3, and prompts a worker to check the VAD deposition device 6 through an audible and visual alarm. At the same time, the alarm module 16 also sends alarm information to the terminal 4 to alert the engineer to handle the abnormal situation in time.
While the foregoing description illustrates and describes the preferred embodiments of the present utility model, as noted above, it is to be understood that the utility model is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (7)
1. An automatic refractive index control system for an optical fiber preform, which is characterized in that: the system comprises a PLC control system (1) and a gas flow controller (2) which correspond to VAD deposition equipment (6), wherein the PLC control system (1) is in communication control connection with the gas flow controller (2), the PLC control system (1) is connected with a product traceability management system (3), and the PLC control system (1) is in communication feedback connection with the product traceability management system (3);
the product traceability management system (3) is provided with a detection result input module (31) and a detection result storage module (32) which are in communication connection, wherein the refractive index detection value is input through the detection result input module (31) and is fed back and stored in the detection result storage module (32);
the PLC control system (1) is internally provided with a target value module (11), a comparison module (12), a comparison result storage module (13), a refractive index judgment module (14) and a flow adjustment feedback module (15) which are sequentially in communication feedback connection, the detection result storage module (32) is in communication feedback connection with the comparison module (12), the flow adjustment feedback module (15) is in communication control connection with the gas flow controller (2), and refractive index judgment and flow adjustment rules (141) are arranged in the refractive index judgment module (14);
the comparison module (12) is used for receiving the refractive index detection value input by the detection result storage module (32) and the set refractive index target value input by the target value module (11), and comparing the refractive index detection value and the set refractive index target value to obtain a comparison result; the comparison result storage module (13) is used for receiving the comparison result input by the comparison module (12); the refractive index judging module (14) is used for receiving the comparison result input by the comparison result storage module (13), judging the received comparison result according to the refractive index judging and flow adjusting rule (141), judging whether the flow of germanium tetrachloride needs to be adjusted and obtaining a flow adjusting instruction; the flow adjustment feedback module (15) is used for receiving a flow adjustment instruction input by the refractive index judging module (14) and controlling the gas flow controller (2) to adjust the germanium tetrachloride flow of the VAD deposition equipment (6) according to the received flow adjustment instruction.
2. An optical fiber preform refractive index automatic control system according to claim 1, wherein: the refractive index judging module (14) is also in communication connection with an alarm module (16), and the alarm module (16) is in communication feedback connection with the product traceability management system (3); the alarm module (16) issues an alarm when the comparison result received by the refractive index determination module (14) is not within the refractive index determination and flow adjustment rule (141).
3. An optical fiber preform refractive index automatic control system according to claim 2, wherein: the product traceability management system (3) is also provided with a flow adjustment storage module (33), and the flow adjustment feedback module (15) is in communication feedback connection with the flow adjustment storage module (33).
4. An optical fiber preform refractive index automatic control system according to claim 3, wherein: the product traceability management system (3) is also provided with a mail sending module (34), the flow adjustment storage module (33) is in communication feedback connection with the mail sending module (34), the mail sending module (34) is connected with the terminal (4), and the mail sending module (34) sends a result fed back by the flow adjustment storage module (33) to the terminal (4).
5. The automatic refractive index control system for an optical fiber preform according to claim 4, wherein: the PLC control system (1) is also provided with an instruction correction module (17), the terminal (4) is in communication control connection with the instruction correction module (17), and the instruction correction module (17) is in communication feedback connection with the flow adjustment feedback module (15).
6. The automatic refractive index control system for an optical fiber preform according to claim 5, wherein: the alarm module (16) is also in communication feedback connection with the terminal (4), an alarm mode between the alarm module (16) and the product tracing management system (3) is audible and visual alarm, and an alarm mode between the alarm module (16) and the terminal (4) is one or more of mail, telephone or short message.
7. An optical fiber preform refractive index automatic control system according to any one of claims 1 to 6, wherein: the product traceability management system (3) and the PLC control system (1) are also in communication feedback connection with a database (5), the database (5) is in communication feedback connection with the terminal (4), and an encryption module (51) is arranged between the database and the terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321398060.4U CN219950843U (en) | 2023-06-02 | 2023-06-02 | Optical fiber perform refractive index automatic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321398060.4U CN219950843U (en) | 2023-06-02 | 2023-06-02 | Optical fiber perform refractive index automatic control system |
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| CN219950843U true CN219950843U (en) | 2023-11-03 |
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| CN202321398060.4U Active CN219950843U (en) | 2023-06-02 | 2023-06-02 | Optical fiber perform refractive index automatic control system |
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